<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    body {
      position: relative;
      align-items: center;
      min-height: 100vh;
      background-color: rgb(118, 218, 255);
      overflow: hidden;
    }

    body :before,
    body :after {
      content: "";
      position: absolute;
      left: 50%;
      min-width: 50vw;
      min-height: 50vw;
      background-color: #fff;
      animation: rotate infinite linear;
    }

    body :before {
      bottom: 15vh;
      border-radius: 45%;
      animation-duration: 10s;
    }

    body:after {
      bottom: 12vh;
      opacity: .5;
      border-radius: 47%;
      animation-duration: 10s;
    }

    @keyframes rotate {
      0% {
        transform: translate(-50%, 0) rotateZ(0deg);
      }

      50% {
        transform: translate(-50%, -2%) rotateZ(180deg);
      }

      100% {
        transform: translate(-50%, 0%) rotateZ(360deg);
      }
    }

    h2 {
      position: relative;
      color: #333;
      z-index: 10;
      text-align: center;
      height: 100vh;
      line-height: 140vh;
      font-size: 8vw;
      text-shadow: 3px 3px 2px #999;
    }
  </style>
</head>

<body>
  <h2>Pure Css Wave</h2>
  <script></script>
</body>

</html>